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Abstract

PURPOSE: To impart superior impact resistance to a plastic lens by forming a primer layer by coating polyurethane resin soln. on the surface of a substrate of the plastic lens and heat treating the coated layer, providing further a hardened layer comprising silicone resin, then forming an antireflection film by the vapor deposition of an inorg. material.

CONSTITUTION: A primer layer having 0.01W30μm film thickness is formed by coating polyurethane resin soln. on the surface of a substrate of plastic lens and heat treating the coated film. Then, a hardened layer comprising silicone resin is formed, and a single layered or multilayered antireflection film is formed on its surface by the vapor deposition of an inorg. material. Particularly preferred film thickness of the primer layer is 1W20μm. If the film thickness is <0.01μm, the improving effect for the impact resistance is insufficient. If it exceeds 30μm, the precision of the coated lens surface is interior. By this constitution, a plastic lens having extremely superior appearance, abrasion resistance, scratch resistance, adhesion as well as impact resistance is obtd.